Randy Dunlap bfe8df3d31 slow down printk during boot ... Optionally add a boot delay after each kernel printk() call, crudely measured in milliseconds, with a maximum delay of 10 seconds per printk. Enable CONFIG_BOOT_PRINTK_DELAY=y and then add (e.g.): "lpj=loops_per_jiffy boot_delay=100" to the kernel command line. It has been useful in cases like "during boot, my machine just reboots or the screen goes black" by slowing down printk, (and adding initcall_debug), we can usually see the last thing that happened before the lights went out which is usually a valuable clue. [akpm@linux-foundation.org: not all architectures implement CONFIG_HZ] [akpm@linux-foundation.org: fix lots of stuff] [bunk@stusta.de: kernel/printk.c: make 2 variables static] [heiko.carstens@de.ibm.com: fix slow down printk on boot compile error] Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-10-16 09:42:49 -07:00
..
calibrate.c	slow down printk during boot	2007-10-16 09:42:49 -07:00
do_mounts_initrd.c	Fix failure to resume from initrds	2007-09-19 11:24:17 -07:00
do_mounts_md.c
do_mounts_rd.c
do_mounts.c	init: wait for asynchronously scanned block devices	2007-07-16 09:05:45 -07:00
do_mounts.h
initramfs.c	initramfs: missing __init	2007-07-26 11:11:56 -07:00
Kconfig	sched: group scheduler, fix coding style issues	2007-10-15 17:00:12 +02:00
main.c	fix maxcpus=1 oops in show_stat()	2007-08-30 21:54:31 -07:00
Makefile
noinitramfs.c
version.c